Help please, potential sponsor problem!

[Richardx]

Hi all, wonder if anybody can answer this one, we were granted our 176 visa sponsored by my wifes uncle in Feb. Since then his health has deteriorated and I'm wondering if they would let us switch sponsor to her aunt if anything happened. May be worrying about nothing but want to cover all bases. We are planning to go summer 2013 and have a trip booked this December to satisfy the date of first entry requirement.
I really don't know what we should do now, carry on with our plans as before, or try and accelerate things, ie get over there asap. What would the DIAC view be if the worst did happen and we asked if our aunt could now sponsor? Or would we need to do anything different, we'd still be ok financially anyway? Somebody mentioned that the important part is getting the visa validated, ie make the trip in December and all should be ok but I don't know how true that may be. I'd really appreciate any guidance here, the whole long process could be in jeopardy.

[lebourvellec]

The visa has been granted - you now can not change sponsors.

You need to validate your visa by the sepcified first entry date or your visa will become invalid - speak to a Registered Migration Agent to clarify regarding the sponsor.
Read the information on the link from your previous post regarding Sponsors Obligations.